Machine for converting latex into sheets of crude rubber.



F. E. 'MELLIN'GER &;H.- H. MARKLBY. MACHINE FOR GONVERTING LATEX INTO SHEETS or 0mm RUBBER.

APPLIUATION FILED JAN. 19, 1911 1,008,607, Patented Nov. 14, 1911;

2 SHEETB' 'SHEBT 1.

HHMAR'KLE". F.-E .MELLING :R.

WQfam F. E. MBLLINGER &: H. H. MARKLEY.

MAGHINE FOR CONVERTING LATEX INTO SHEETS 0F CRUDE BE BBER.

APPLICATION FILED JAN. 19, 1911.'

Patentel Nov. 14, 1911.

2 SHEETS-SHEET 2.

UNITED STATES P T NT OFFICE;

FRANK MELLINGEB AND HENRY H. MARKLEY, OF FUN EJA, MEXIGO.

' Toallwhom itma/yconcem:

.- Be it known, that we, FRANK E. MEL- LINGER and HENRY H. MARKLEY, citizens of the United States of America, residing at Lumija, in the State of Chia'pas, Mexico, have invented certain new and useful Improvements in the Process of and Machine for Converting Latex into Sheets of Crude Rubber; and we do declare the following to tating a metallic cylinder or drum, which is heated on the interior; in applying a coating of thelatex to the circumference of said drum, and in allowin each coat-ing'of the latex to dry or set be ore the next succeedin coating is applied, until a sheet of crude rubber of desired thickness is obtained.

The machine for carrying out the process will now be described inconnection with the accompanying drawings, of which Figure 1 is a top plan view with a portion of the rotating drum broken away to reveal the heat-conducting pipe. Fig. 2 is a side elevation of the machine.

In the drawings and the description to follow, the same reference characters will indicatethe same arts.

The cylindrical shell or drum 1 is of suitable dimensions .to produce a sheet of crude rubber of suitable size for practical pur-' poses. For example, the width of the drum and its circumference may produce a sheet of'rubber three feet wide by eighteen and one half feet in length, or these dimensions may be varied as may be desired. The said drum is constructed of metal andis supported in a suitable frame 2. .3, 3 desi ate boxes or bearin s secured to eachside o and 4, 4 esignate short tubular shafts with flanges 5, 5 w i sides of the drum at the axis of rotation. The shaft on oneside is extended to receive a pulley 6 through which oweris transmitto rotate the drum. xtending throu h the bearings 3, 3, and through the axis of t e a 'drum, are two sections 7 and 8 of pipe in Specification of Letters Patent. Patent 1 Nov, Application filed Ianuary'19, 1911. Serial ljlo. 608,606. 4

the frame,

ch are secured to the opposite uacnnfn roa CONVERTING LATEX m'ro 'snn'n'rs cr 01w m nunnma.

alinement, separated by a wall or closed end 9, and held together by l. coupling sleeve 10.

Arranged on the interior of the drum is a.

heating coil 11, the ends of which connect respectively with the so vtionjs of pipe 7 and 8. Heat is providedby steam introduced to the coil 11 through secti )n.-.7 and discharged through section 8. Th1 heating coil 11 is stationargon the interio: of the drum, beingsupporte ona fixed frame or spider 12, free from engagement with the interior of the drum at any point. The spider 12 is mounted in any suitable way, For example. on the sections of piping 7 and 8. It will thus be seen that the interior of the drum is uniformly heated, and the latex applied to the circumference thereof is likewise subjected to a uniform heat free fr )m fumes or smoke.

This insures a superior q iality of crude sheetrubber. The latex is sup olied to the circumference of the drum by :ne'ans of a suitable pan or reservoir 13 thrc ugh which the circumference of the drum coated throughout its pe: upher with a uniform application of lat( x. T e pan 13 is supported upon a pivot: .1 frame consisting of two side ars pivoted to the main frame at 14, and united by a c .OSS piece 15. The pivotal frame so construe :ed and mounted, is operated to-raise and 10V er it by a'hand lever 16 at the front of the machine. This lever has a suitable connect .on 17 with the forward portion of the pan l :upport. It will of course be readily unders1 ood that these are mere details which may be varied more or less without affecting the )rinciples involved. And further, it will be u iderstood that any of the well known mean: of heat radiation maybe appliedto the i111 erior of the drum, such for example as stean hot water or electricity. In operation, the latex is applied to the surface of the drum urin' the. rotation thereof at. a suitable sp led or the work.-

The pan or reservoir 13 s raised by means of} the lever, and is mai itained in an elevated position until a coat of latex is applied toithe peripher of the dr1 un. The latex'pan 'is then lowere .and the )reviously a ied assesand is thus coat permitted toilry, aft :1 whichsai' atex I pan is again elevatedand lowered. This process is repeated until the desired. thick ness ,of rubber has been built'upon the pe vriph ery of the drum. The full and dotted line g.2, sh ow* positions of the latex rese rvoir.

1 8 designates a suitable shield, which inmeans for rotating said closes the lower'half of the Circumference of the drum 1. This shield conforms to the shape. of the drum, and it extends from the inner bottom ofthe reservoir 13. The object and purpose'of said shield is to prevent any spattering of the latex during the rotation of 'the drum. The said shield may be secured in any suitable manner between the side bars 2 of the frame.

Having described ou' i 'invention, we claim: In a machine for convertin latex I into sheets of crude rubber, the combination with a metallic drum havin its, ends inclosed, f l 1 h um},1 and means f0; uni orm a in eat to t e eri er 0 said drun i ffo in th interior thGlEiOfPOf a vat adapted to contain latex which isdelivered In testimony whereof we aflix our signa- 25 tures, in presence of two witnesses.

FRANK E. MELLINGER.

Witnesses:

A. G. Wmss, PERCY S'roU'r;

HENRY, H. MARKLEY. 

